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Home >> Lexus >> 2021 >> UX 200 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System (Symptom Tests) (2 Of 2) (Except Hybrid) >> CAN COMMUNICATION SYSTEM (for Gasoline Model) >> Check Bus 1 Line for Short to GND [08/2021 - 07/2022] >> Description

Check Bus 1 Line for Short to GND [08/2021 - 07/2022]: Description

There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 23 (CA1H) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 8 (CA1L) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3.

Symptom Trouble Area
There is no resistance between terminal 23 (CA1H) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 8 (CA1L) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3.
  • Short to ground in CAN main bus line
  • Short to ground in CAN branch line
  • Central gateway ECU (network gateway ECU)
  • Forward recognition camera
  • Clearance warning ECU assembly

    (w/ Parking Support Alert System)

  • Millimeter wave radar sensor assembly
  • Blind spot monitor sensor LH

    (w/ Blind Spot Monitor System)

  • Rear television camera assembly
  • No. 2 CAN junction connector
  • No. 8 CAN junction connector
  • No. 2 CAN junction terminal
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